1. PentadecagonIn geometry, a pentadecagon (or pentakaidecagon) is any 15-sided, 15-angled, polygon.
Read “Pentadecagon” on English Wikipedia
Read “十五角形” on Japanese Wikipedia
Read “Pentadecagon” on DBpedia
Read “Pentadecagon” on English Wikipedia
Read “十五角形” on Japanese Wikipedia
Read “Pentadecagon” on DBpedia
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